50499 divided by 90 
The aim is to understand the frequency of 90 in 50499.

Let's proceed to step 1:
90 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 90

Going ahead to step 2:
The number 90 fits into 50 0 times, leaving a remainder of 50.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 50 to get 50.
Include the next digit (4) from the dividend after 50, then repeat: 504 / 90

Moving on to step 3:
If we divide 504 by 90, we get 5 and a remainder of 54.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 54 after subtracting 450 from 504.
Grab the next digit (9) from the dividend, add it to 54, then carry on: 549 / 90

Moving on to step 4:
When dividing 549 by 90, we get 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 56.0
The remainder is 9 after subtracting 540 from 549.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 90

Let's proceed to step 5:
If we divide 99 by 90, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 561.0
Deduct 90 from 99 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 6:
The number 90 fits into 90 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 561.1
The remainder is 0 after subtracting 90 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
The number 90 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 561.1
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
90 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 561.1
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 561.1, and the remainder is 0.0.